Aveiro weather by month
The best time to visit Aveiro is May, June and September — 94/100 in June, 24°C and 6 rainy days. The best season is summer, June to August (90/100 on average).
The worst month is January at 64/100 — cool, rainy, clean air. See January →
Updated September 2026 · climate normals from ERA5 reanalysis
Planning the wider trip? Best time to visit Portugal →
Best season: June to August (90/100 on average) · worst January (64/100)
- Days
- 24°C
- Nights
- 16°C
- Wet days
- 6
- Sun
- 12.8 h
- Humidity
- 77%
- Daylight
- 15 h

Aveiro, month by month
Comfort score out of 100 for the kind of trip Aveiro is best for, the average high, rainy days and hours of sun a day from the climate normals, and how busy it tends to be.
What's on in Aveiro through the year
Festivals, natural spectacles, holidays and the seasons to watch out for — curated and sourced. The month pages carry the detail.
- January
- Festa de São Gonçalinho5–14 Jan (usually)Festival
- March
- Feira de Março25 Mar – 26 AprFestival
- Easter week29 Mar – 5 AprHoliday
- May
- Nortada afternoons1 May – 30 SepSeason
- June
- Salt pans working15 Jun – 20 Sep (usually)Season
- July
- Festival dos Canais15–19 JulFestival
- December
- Christmas and New Year24 Dec – 1 JanHoliday
Crowds in Aveiro in June
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
BusySummer holidays in Portugal, school holidays in 4 of the markets that fill it(estimated)
Peak crowdsBusyShoulder seasonQuiet
Good to know before you go to Aveiro
Real experiences from travellers' own write-ups, quoted with a link to the original.
Visas & entry
A guide to Aveiro's moliceiro canal boats notes the central ticket dock can fill completely by 10am on summer weekends, so weekday mornings in shoulder season are the reliable way to avoid the wait for the roughly 45-minute canal tour. Their budget alternative: free bikes can be borrowed from a kiosk near the municipal market (bring ID and your own lock) for exploring the compact canal-lined center on your own schedule instead of waiting for a boat slot.
Traveller notes on Aveiro
What people who have been say about the place — the year-round notes first, then month by month.
Forum posters describe May as bringing genuinely great weather for touring Aveiro's canals by traditional moliceiro boat - the roughly 45-minute round-trip cruise (about 13 euros) through the colorfully painted boats' historic waterways is repeatedly named the top thing to do in town, and posters specifically note it's best enjoyed on a nice-weather day rather than a rainy one. Portugal's broader spring pattern applies here too - generally mild and pleasant but with real day-to-day variability, so a layer for cooler mornings or an unexpected shower is sensible even during a generally good May stretch. Beyond the canal cruise, posters describe Aveiro as a compact, easily walkable town - often visited as a day trip from Porto - that pairs well with a relaxed, unhurried pace.
Portugal forum posters describe November as a genuine lottery further north - you could get two weeks of steady rain or two weeks of mild, sunny days with cool evenings, and Aveiro's stretch of coast is squarely in the wetter, windier half of the country compared to the Algarve. When the sun does break through, daytime temperatures in the mid-to-high teens C feel pleasant for walking the canals, but forum regulars all say to pack a proper rain layer and expect a blustery day at some point - November is one of the wetter months here.
Add your own note from Aveiro's card on the map.